Alright, let's solve this math problem step by step. First, we have the number 675. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 78. So, we're going to take the number 675 and add it to itself 78 times.
Step 1: 0 + 675 = 675
Step 2: 675 + 675 = 1350
Step 3: 1350 + 675 = 2025
Step 4: 2025 + 675 = 2700
Step 5: 2700 + 675 = 3375
Step 6: 3375 + 675 = 4050
Step 7: 4050 + 675 = 4725
Step 8: 4725 + 675 = 5400
Step 9: 5400 + 675 = 6075
Step 10: 6075 + 675 = 6750
Step 11: 6750 + 675 = 7425
Step 12: 7425 + 675 = 8100
Step 13: 8100 + 675 = 8775
Step 14: 8775 + 675 = 9450
Step 15: 9450 + 675 = 10125
Step 16: 10125 + 675 = 10800
Step 17: 10800 + 675 = 11475
Step 18: 11475 + 675 = 12150
Step 19: 12150 + 675 = 12825
Step 20: 12825 + 675 = 13500
Step 21: 13500 + 675 = 14175
Step 22: 14175 + 675 = 14850
Step 23: 14850 + 675 = 15525
Step 24: 15525 + 675 = 16200
Step 25: 16200 + 675 = 16875
Step 26: 16875 + 675 = 17550
Step 27: 17550 + 675 = 18225
Step 28: 18225 + 675 = 18900
Step 29: 18900 + 675 = 19575
Step 30: 19575 + 675 = 20250
Step 31: 20250 + 675 = 20925
Step 32: 20925 + 675 = 21600
Step 33: 21600 + 675 = 22275
Step 34: 22275 + 675 = 22950
Step 35: 22950 + 675 = 23625
Step 36: 23625 + 675 = 24300
Step 37: 24300 + 675 = 24975
Step 38: 24975 + 675 = 25650
Step 39: 25650 + 675 = 26325
Step 40: 26325 + 675 = 27000
Step 41: 27000 + 675 = 27675
Step 42: 27675 + 675 = 28350
Step 43: 28350 + 675 = 29025
Step 44: 29025 + 675 = 29700
Step 45: 29700 + 675 = 30375
Step 46: 30375 + 675 = 31050
Step 47: 31050 + 675 = 31725
Step 48: 31725 + 675 = 32400
Step 49: 32400 + 675 = 33075
Step 50: 33075 + 675 = 33750
Step 51: 33750 + 675 = 34425
Step 52: 34425 + 675 = 35100
Step 53: 35100 + 675 = 35775
Step 54: 35775 + 675 = 36450
Step 55: 36450 + 675 = 37125
Step 56: 37125 + 675 = 37800
Step 57: 37800 + 675 = 38475
Step 58: 38475 + 675 = 39150
Step 59: 39150 + 675 = 39825
Step 60: 39825 + 675 = 40500
Step 61: 40500 + 675 = 41175
Step 62: 41175 + 675 = 41850
Step 63: 41850 + 675 = 42525
Step 64: 42525 + 675 = 43200
Step 65: 43200 + 675 = 43875
Step 66: 43875 + 675 = 44550
Step 67: 44550 + 675 = 45225
Step 68: 45225 + 675 = 45900
Step 69: 45900 + 675 = 46575
Step 70: 46575 + 675 = 47250
Step 71: 47250 + 675 = 47925
Step 72: 47925 + 675 = 48600
Step 73: 48600 + 675 = 49275
Step 74: 49275 + 675 = 49950
Step 75: 49950 + 675 = 50625
Step 76: 50625 + 675 = 51300
Step 77: 51300 + 675 = 51975
Step 78: 51975 + 675 = 52650

So, 675*78 = 52650